ld/ldexp.h

   1 /* ldexp.h -
   2    Copyright 1991, 92, 93, 94, 95, 98, 2000
   3    Free Software Foundation, Inc.
   4
   5    This file is part of GLD, the Gnu Linker.
   6
   7    GLD is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2, or (at your option)
  10    any later version.
  11
  12    GLD is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GLD; see the file COPYING.  If not, write to the Free
  19    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20    02111-1307, USA.  */
  21
  22 #ifndef LDEXP_H
  23 #define LDEXP_H
  24
  25 /* The result of an expression tree */
  26 typedef struct {
  27   bfd_vma value;
  28   struct lang_output_section_statement_struct *section;
  29   boolean valid_p;
  30 } etree_value_type;
  31
  32 typedef struct {
  33   int node_code;
  34   enum { etree_binary,
  35            etree_trinary,
  36            etree_unary,
  37            etree_name,
  38            etree_assign,
  39            etree_provide,
  40            etree_undef,
  41            etree_unspec,
  42            etree_value,
  43            etree_assert,
  44            etree_rel } node_class;
  45 } node_type;
  46
  47 typedef union etree_union {
  48   node_type type;
  49   struct {
  50     node_type type;
  51     union etree_union *lhs;
  52     union etree_union *rhs;
  53   } binary;
  54   struct {
  55     node_type type;
  56     union etree_union *cond;
  57     union etree_union *lhs;
  58     union etree_union *rhs;
  59   } trinary;
  60   struct {
  61     node_type type;
  62     CONST char *dst;
  63     union etree_union *src;
  64   } assign;
  65
  66   struct {
  67     node_type type;
  68     union etree_union *child;
  69   } unary;
  70   struct {
  71     node_type type;
  72     CONST char *name;
  73   } name;
  74   struct {
  75     node_type type;
  76     bfd_vma value;
  77   } value;
  78   struct {
  79     node_type type;
  80     asection *section;
  81     bfd_vma value;
  82   } rel;
  83   struct {
  84     node_type type;
  85     union etree_union *child;
  86     const char *message;
  87   } assert_s;
  88 } etree_type;
  89
  90 etree_type *exp_intop PARAMS ((bfd_vma));
  91 etree_type *exp_relop PARAMS ((asection *, bfd_vma));
  92 etree_value_type invalid PARAMS ((void));
  93 etree_value_type exp_fold_tree PARAMS ((etree_type *, struct
  94                                         lang_output_section_statement_struct *,
  95                                         lang_phase_type,
  96                                         bfd_vma, bfd_vma *));
  97 etree_type *exp_binop PARAMS ((int, etree_type *, etree_type *));
  98 etree_type *exp_trinop PARAMS ((int,etree_type *, etree_type *, etree_type *));
  99 etree_type *exp_unop PARAMS ((int, etree_type *));
 100 etree_type *exp_nameop PARAMS ((int, CONST char *));
 101 etree_type *exp_assop PARAMS ((int, CONST char *, etree_type *));
 102 etree_type *exp_provide PARAMS ((const char *, etree_type *));
 103 etree_type *exp_assert PARAMS ((etree_type *, const char *));
 104 void exp_print_tree PARAMS ((etree_type *));
 105 bfd_vma exp_get_vma PARAMS ((etree_type *, bfd_vma, char *, lang_phase_type));
 106 int exp_get_value_int PARAMS ((etree_type *, int, char *, lang_phase_type));
 107 bfd_vma exp_get_abs_int PARAMS ((etree_type *, int, char *, lang_phase_type));
 108
 109 #endif